ASSESSMENT OF HYDROGEN UTILIZATION TECHNOLOGY IN CHEMICAL SECTOR IN ACHIEVING THE LONG-TERM GOALS OF THE PARIS AGREEMENT

Abstract

 Biomass, hydrogen, and CO₂ utilization technologies have recently attracted attention as CO₂ emissions reduction measures while previous climate change mitigation studies rarely evaluated these technologies. This study aims to develop the global energy system model which can explicitly consider chemical production technologies and to clarify the role of feedstock substitution technologies in chemical production process. As a result, electrolytic hydrogen utilization technologies were implemented only in ammonia production, and CO₂ utilization technologies were never introduced due to its high cost even under the assumption of limited availability of biomass and CCS that should give an advantage to CO₂ utilization. It is suggested that CO₂ emissions reduction from the use of fossil fuel feedstock strongly depends on the availability of biomass, which plays a central role in feedstock substitution.